9142142 has 4 divisors (see below), whose sum is σ = 13713216. Its totient is φ = 4571070.

The previous prime is 9142103. The next prime is 9142151. The reversal of 9142142 is 2412419.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2412419 = 17 ⋅141907.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2285534 + ... + 2285537.

It is an arithmetic number, because the mean of its divisors is an integer number (3428304).

Almost surely, 2^9142142 is an apocalyptic number.

9142142 is a deficient number, since it is larger than the sum of its proper divisors (4571074).

9142142 is a wasteful number, since it uses less digits than its factorization.

9142142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4571073.

The product of its digits is 576, while the sum is 23.

The square root of 9142142 is about 3023.5975261268. The cubic root of 9142142 is about 209.0977313579.

The spelling of 9142142 in words is "nine million, one hundred forty-two thousand, one hundred forty-two".